There's something very nostalgic about standing in front of a large audience and walking them through scrolls and then expounding on the principles of magic. She has more to say at this point, though, she's dissected more spells into their component pieces and Olórin's been around for a while now to help explore vast combinatorial explosion. The lecture takes a few hours even with most of the content offloaded into "look it up, it's in the files". And then there is food and mingling for anyone who doesn't have to race off immediately to do important multiverse things!